UPDATE 1-Afghanistan accuses Pakistan army of rocket attacks

KABUL, July 2 (Reuters) - Afghanistan accused Pakistan'sarmy on Monday of launching months of rocket attacks on itsterritory and threatened to report Islamabad to the U.N.Security Council, straining already troubled ties between theneighbours.

Kabul has regularly accused elements in Islamabad'sgovernment and army of backing militants fighting theU.S.-backed Kabul government - charges denied by Pakistan.

But it was the first time Afghanistan has held Pakistandirectly responsible for hundreds of rocket strikes on theheavily forested Afghan border province of Kunar that it sayshave killed four civilians since March.

No one was immediately available for comment from Islamabadbut Pakistan has previously accused Kabul of not doing enough towipe out militant bases in Afghan border areas like Kunar.

"We now have enough evidence that proves the rockets used inthese attacks belong to the Pakistani army," the spokesman forAfghanistan's National Directorate of Security, ShafiqullahTaheri, told Reuters.

"Pakistan has never had such brazen courage in its history... They know that Afghan security forces can't react, so theyoutrageously and indecently attack us," he added.

Kabul would report Islamabad to the U.N. Security Council ifthe attacks continued and talks with Pakistan yielded no resultsover the coming days, Afghanistan's foreign ministry spokesmanFaramarz Tamana said.

"If diplomatic discussions bring no positive results we willrefer the issue to the U.N. Security Council," he told Reuters.

Both Afghanistan and Pakistan had previously accused theTaliban of carrying out the attacks on Kunar, as part themilitant group's insurgency plaguing both sides of the border.

Taheri's comments come a week after Pakistan accused Afghantroops and NATO forces of failing to take action against what itsaid were Taliban safe havens in Kunar and other areas.

A Pakistani intelligence official on Monday accused Afghantroops of crossing into Pakistani territory on Sunday andkilling two tribesmen.

"Men in Afghan National Army uniforms came into Pakistan inthe Ghozdarra area of Kurram. They opened fire at a house,killing two people," said the intelligence official. "Thevillagers returned fire and the attackers left."

Commentators have said Pakistan is trying to stamp itsauthority on the troubled border region ahead of the withdrawalof international troops from Afghanistan in 2014.